F1 - Factor 1 FF - Fill factor PF - Power factor QF - Queue Factor RF - Range Factor WF - Water Factor LF - Lethal Factor SF - Spread Factor TF - Tissue factor GF - Growth Factor IF - Impact Factor DF - Damping Factor RF - Reserve Factor NF - Nuclear Factor NF - Nulcear Factor NJF - New Jet Factor OJF - Old Jet Factor QF - Quality factor TOF - The Oil Factor WUF - Web Use Factor AMF - Air Mass Factor FA - Factor analysis FPT - Factor Pax Time KWF - Kidz Wow Factor LUF - Land Use Factor NF - Necrosis Factor PQF - Pop Quiz Factor SVF - Sky View Factor TF - Transfer Factor TLF - The Logo Factor CFZ - Care Factor Zero AF - Agression Factor BGF - Bent Geek Factor FFL - Fear Factor Live FFZ - Fall Factor Zero HFF - High Fill Factor LCF - Look Cool Factor LLF - Line Loss Factor LPF - Leak Path Factor MPF - Mid Power Factor NFF - Nano Form Factor PHF - Peak Hour Factor RF - Retention Factor RTF - Real time factor SCF - Stem Cell Factor SFB - Steel Factor But TBF - The Brian Factor URF - Unit Risk Factor WZF - Work Zone Factor SFF - Small Form Factor